Electro-Proportional Valves — Pressure Control

TS90-31 — Proportional, Pilot-Operated Reducing/Relieving
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TS90-31 Valve

TS90-31 Valve symbol
A screw-in, cartridge-style, pilot-operated, spool-type hydraulic pressure
reducing/relieving valve, which can be infinitely adjusted across a prescribed
range using a variable electric input. Pressure output is proportional to DC
current input. This valve is intended for use as a pressure limiting device in
demanding applications.

Without applied current, the TS90-31 allows flow from 3 to 4 while blocking 2.
When the coil is energized, 3 is connected to 2, and pressure at 3 is controlled
proportional to the amount of current applied to the coil. If pressure at 3 exceeds
the setting induced by the coil, pressure is relieved to 4.
Back pressure on port 4 becomes additive to the pressure setting at a 1:1 ratio.
Note: Consult factory for special OEM variations of this product.

• 12 and 24 volt coils standard.
• Optional waterproof E-Coils rated up to IP69K.
• Valve spool protected by a 50x50 mesh screen.

Max. Inlet Pressure at ports 1 and 2: 207 bar (3000 psi)
Max. Tank Pressure at port 3: 69 bar (1000 psi)
Burst Pressure: 345 bar (5000 psi)
Regulated Pressure Range from zero to maximum control current: 0 to 138 bar (2000 psi)
Electrical Parameters:

Typical Max. Current
(amp) at 0 gpm

Typical Resistance ±5%
at 20°C (ohms)

Typical Apparent Inductance (mH)

12 VDC 24 VDC 12 VDC 24 VDC 12 VDC 24 VDC
D-Coil 0.68 amp 0.34 amp 7.2 ohms ±5% 28.8 ohms •5% 148 mH 587 mH
E-Coil 0.88 amp 0.44 amp 7.1 ohms •5% 28.5 ohms •5% 137 mH 580 mH
Rated Flow: 38 lpm (10 gpm)
Max. Pilot Flow: 0.85 lpm (0.23 gpm) with zero current
Temperature: -40° to 100°C (-40° to 212°F) with Buna seals;
   -26° to 204°C (-15° to 400°F) with fluorocarbon seals
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
   7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: When possible, the valve should be mounted below the reservoir oil level.
   This will maintain oil in the armature preventing trapped air instability.
   If this is not feasible, mount the valve horizontally for best results; See page 9.020.1
Cavity: VC98-3; See page 9.110.1_3w
Cavity Tool: CT98-3xx; See page 8.600.1
Seal Kit: SK90-3x-BM; See page 8.650.1
Coil Nut: 4540560

The EVDR Series controllers are recommended for use with most HydraForce
proportional valves. These newer electronic controllers are versatile, reliable, and
easily configured and customized for a wide range of applications.
See the EVDR Product Selection Guide.
For other Electronic Controllers, see page 2.001.1_pdf




TS90-31 Valve Performance Chart


TS90-31 Valve Performance Chart


TS90-31 Performance curves



TS90-31 Valve Dimensions



Cartridge: Weight: 0.25 kg (0.55 lb);
Steel with hardened work surfaces.
Zinc-plated exposed surfaces; O-rings

Standard Ported Body: Weight: 0.34 kg
(0.75 lb); Anodized high-strength 6061 T6
aluminum alloy, rated to 207 bar (3000 psi);
Ductile iron bodies available; dimensions
may differ. See page 8.010.1_3w.

D-Coil: Weight each: 0.32 kg (0.70 lb);
Unitized thermoplastic encapsulated,
Class H high temperature magnetwire.
See page 3.200.1_10-size.

E-Coil: Weight: 0.41 kg (0.9 lb); Perfect
wound, fully encapsulated with rugged
external metal shell; Rated up to IP69K
with integral connectors.
See page 3.400.1_10-size.



TS90-31 Ordering Chart